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(a+b)²
a²+b²+2ab
(a-b)²
a²-2ab+b²
a²-b²
(a+b) (a-b)
(a+b+c)²
a²+b²+c²+2ab+2bc+2ca
a³+b³
(a+b) (a²-ab+b²)
a³-b³
(a-b) (a²+ab+b²)
(a-b)³
a³-b³-3ab(a-b)
(a+b)³
a³+b³+3ab(a+b)